CO2在正戊醇中的溶解度和体积传质系数

doi:10.11949/j.issn.0438-1157.20161745

化工学报 ›› 2017, Vol. 68 ›› Issue (5): 1780-1785.DOI: 10.11949/j.issn.0438-1157.20161745

CO₂在正戊醇中的溶解度和体积传质系数

何茂刚¹, 白里航¹, 刘思琦¹, 刘向阳¹, 贺永东²

1 西安交通大学热流科学与工程教育部重点实验室, 陕西西安 710049;
2 新疆大学科学与技术学院, 新疆乌鲁木齐 830046

收稿日期:2016-12-13 修回日期:2017-02-12 出版日期:2017-05-05 发布日期:2017-05-05
通讯作者: 何茂刚
基金资助:
国家杰出青年科学基金项目（51525604）。

Solubility and volumetric mass transfer coefficient of CO₂in 1-pentanol

HE Maogang¹, BAI Lihang¹, LIU Siqi¹, LIU Xiangyang¹, HE Yongdong²

1 MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China;
2 School of Physical Science and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China

Received:2016-12-13 Revised:2017-02-12 Online:2017-05-05 Published:2017-05-05
Supported by:
supported by the National Science Fund for Distinguished Young Scholars of China(51525604).

摘要/Abstract

摘要：

基于等体积饱和法搭建了气体在液体中溶解度与体积传质系数的实验测量系统，该实验系统温度、压力、溶解度、体积传质系数的扩展不确定度分别为0.02 K、0.01%、2%、4%。利用该实验系统测量了温度为323～343 K、压力为0.9～5.0 MPa范围内CO₂在正戊醇中的溶解度和体积传质系数。CO₂在正戊醇中的摩尔分数随着压力的升高而升高，在温度为323 K时，压力从2.5 MPa升高到3.2 MPa，溶解度升高26%。CO₂在正戊醇中的摩尔分数随着温度的升高而减小，在压力为0.9 MPa时，温度从323 K升高为343 K，溶解度降低26%。升高温度和压力都有利于提高体积传质系数，当温度和初始压力分别由323 K、1.1 MPa升高至343 K、5.0 MPa时，CO₂在正戊醇中的体积传质系数由0.0089 s^-1升高至 0.0175 s^-1。

关键词: 等体积饱和法, 吸收, 传质, 二氧化碳, 正戊醇

Abstract:

An experimental apparatus based on isochoric saturation method was developed for measuring gas solubility and volumetric mass transfer coefficient in liquid with expanded uncertainties of temperature, pressure, solubility and volumetric mass transfer coefficient at 0.02K, 0.01%, 2%, and 4%, respectively. The solubility and volumetric mass transfer coefficients of CO₂ in 1-pentanol were determined at temperature from 323 K to 343 K and at pressure from 0.9 MPa to 5.0 MPa. CO₂solubility in 1-pentanol increased with the increasing pressure. Mole fraction of CO₂ in 1-pentanol was risen by 26% at 323 K, when pressure was increased from 2.5 MPa to 3.2 MPa. However, CO₂solubility of in 1-pentanol decreased with the increasing temperature. Mole fraction of CO₂ in 1-pentanol also dropped by 26% at pressure of 0.9 MPa when temperature was increased from 323 K to 343 K. Volumetric mass transfer coefficient of CO₂ was risen with increasing temperature and pressure. The CO₂volumetric mass coefficient showed an increase from 0.0089 s^-1 to 0.0175 s^-1 when conditions of temperature and pressure were changed from 323 K and 1.1 MPa to 343 K and 5.0 MPa.

Key words: isochoric saturation method, absorption, mass transfer, CO₂, 1-pentanol

中图分类号:

TQ021.4

何茂刚, 白里航, 刘思琦, 刘向阳, 贺永东. CO₂在正戊醇中的溶解度和体积传质系数[J]. 化工学报, 2017, 68(5): 1780-1785.

HE Maogang, BAI Lihang, LIU Siqi, LIU Xiangyang, HE Yongdong. Solubility and volumetric mass transfer coefficient of CO₂in 1-pentanol[J]. CIESC Journal, 2017, 68(5): 1780-1785.

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CO₂在正戊醇中的溶解度和体积传质系数

Solubility and volumetric mass transfer coefficient of CO₂in 1-pentanol

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